stewart



A. M. STEWART.

PUMPING SYSTEM.

APPLICATION FILED NOV. 4. 1918.

l ,3 1 8?, 1 1'7 0 Patented Oct. 7, 1919.

3 SHEETSSHEET WITNESS: fi INVENTOR. W 7am I A. M. STEWART.

PUMPING SYSTEM. APPLICATION FILED NOV. 4. 1918 1,3 1 8, 1 l 7 PatentedOct. 7, 1919.

3 SHEETSSHEET 2.

' WITNESS 0 0 INVENTOR. Wax/m7 gag A 67 7Q: W

' man/ 0 Patented Oct. 7, 1919.

3 SHEETS-SHEET 3.

A. M. STEWART.

PUMPING SYSTEM.

APPLICATION FILED NOV. 4. I918.

W m6 m. 5 m. w 4 o U3 WW 9 8|. 4 55 .w A a m 72 Q 52 w o 5 O .w i O 6 4m 5 7M4 x 5 8 g x H ANDREW M. STEWART, OF TOLEDO, OHIO, ASSIGNOR TO THENATIONAL SUPPLY COMPANY, OF TOLEDO, OHIO, A CORPORATION OF OHIO.

PUMPING SYSTEM.

Specification of Letters Patent.

Application filed November 4,1918. Serial No. 260,974.

To all whom it may concern Be it known that I, ANDREW M. STEWART, acitizen of the United States, residing at Toledo, in the county of Lucasand State of Ohio, have invented new anduseful 'Improvements in PumpingSystems, of which the following is a specification.

My invention relates to methods of pumping a plurality of wells from acentral point.

It is the object of this invention to provide a pumping system whichemploys the surging action of a fluid, such as water, for example,operated from a central point where the power is applied and the fluidis distributed to the various pumps located at different places.

Referring to the accompanyingdrawings, Figure 1 is a plan View of myimproved pumping systems, parts being broken away;

ig. 2, a vertical section, partly in side ele- Vation showing one of thedistributing valves and its operating means together with variousauxiliary devices; Fig. 3, a vertical section showing a part of one ofthe pumps which I ma employ; Fig. 4, a side elevation of a modi cationof the valve-controlling mechanism, the right hand end being broken offFig. 5, an end elevation of Fig. 4, looking toward the right; and Fig.6,a section through one of the valves.

On Fig. 1, 1 represents the foundation for the central power plant. tionI mount an engine 2 which drives the crank shaft 3 carrying the beltwheel 4. The

latter drives. the belt 5 runnin over the wheel 6 which drives the shaftOn one end of this shaft, I- employ the crank 8 which drives the piston9 of the pressure pump 10. The pump drives fluid through the pipe 11into the pressure tank 12, from which the fluid under pressure passesthrough the outlet pipe 13 into the distributing main or pipe 14. Fromthe pipe 14 a number of branch pipes 15 lead to the inlet chamber 16 ofindividual distributing valves 17. In the chamber 16 is the slide-valve18 constructed to cover the two ports 19 and 20, or to cover the port 20only. The port 19 is an end of the passage 21 in the valve 17 and isconnected by a pipe 22 to the working chamber 23 of the motor 24 belowthe piston 25. The piston rod of the piston 25 is connected above to thecross-head 26, which supports the side-rods 27 extending down to andsecured to the cross-head 28 of the On this foundawater, oil, or otherpump 30, 29 being the piston-rod of the pump and 31 the outlet pipethereof.

The port 20'is one end of the passage 32 in the valve 17 which passageis connected by the pipe 33 with the collector main or pipe 34. The pipe35 connects the main 34 with the surge tank 36, from which the pump 10draws the motor fluid through the pipe 37.

I have shown only one pump 24 on Fig. 1, but it will be understood thatthere will be a pump 24 at the outer end of every pipe 22 in use, andthat there may bea pipe 22 connected to as many valves 17 as there arepumps 24 to be used. I have not shown a pipe 22 for every valve for thesake of keeping the drawing clear.

The shaft 7 carries a belt-wheel 38 which is connected by the belt 39 tothe belt-wheel 40 on the cam or eccentric shaft .41. This shaft carriesan eccentric 42 for each valve 17, the slide-valve 18 thereof beingconnected by a slide-rod 43, a pitman 44 and an eccentric stra 45 to aneccentric 42. i

The operation is as follows: The engine 2 is started which sets inoperation the pressure pump 10 and the cam-shaft 41. When the throw ofthe cam 42 is opposite that shown on Fig. 2, the slide-valve 18 uncoversPatented Oct. 7, 1919..

the port 19, whereupon the fluid from the tank 12 flows through the pipe13, the supand into the valve-chamber 16 of the valve 17, whosesliding-valve was operated. The fluid flows from the port 19 through thepassage 21 and pipe 22 to the motor 24 connected thereto. The fluid inthe motor lifts the piston 25 which causes the pump-rod 29 to rise. Whenthe cam 42 comes to the position shown on Fig. 2, the slide-valve 18connects the ports 19 and 20 and cuts off the connection between theinlet pipe 15 and the port 19, whereupon the fluid in the motor 24 iscaused to surge or flow back through the pipe 22 and passage 21 andthence by way of the valve 18 to the surge tank 36 through the passage32, the branch pipe 33, the main 34, and the pipe 35. The piston 25 andthe parts supported thereby fall, placing the pump 30 in condition foranother upstroke when the fluid surges back to the piston'25 again. Fromthe tank 36 the pump 16 again draws the fluid through the pipe 37. Theoperation described for one of the valves 18 I and cooperating apparatusis the same for .the others, it being-advisable that the cams 42 be setto operate the valves 18 in sequence or in groups to make the work ofthe engine more equally distributed.

The motive fluid for the pumps 24 may be air, water, ammonia, or otherfluid. The

pumps 24 may be operated in freezing weather by the use of water treatedwith a suitable anti-freezing substance. By my invention fluids such asammonia and such treated water may be used without loss.

Referring now to Figs. 4 and 5, I show a modification of the mechanismshown on' Figs. 1 and 2 for controlling the flow of fluid to and fromthe well-pump and to 'the surge tanks. Instead of the band-wheel 40driving a series of eccentrics as shown on Figs. 1 and 2, it drives thecylinder or drum 46, on whose periphery are arranged a series of guidesor cams 47 and 48.

Instead of using slide-valves for controlling the fluid, I employthree-way oscillatory valves, such as is shown on Fig. 6. Each valve isoperated by an arm 49, controlled by thesaid cams 47 and 48. Each valvecasing comprises a T-shaped casing 50 having its central memberconnected by pipes 51 and 52 and an elbow 53 to the distributing main 54corresponding to the main 14 of Figs. 1 and 2; one of its end membersconnected by a pipe 55 and two elbows 56 and 57 to a pipe, as 22*,leading to a wellpump; and the remaining one of its end membersconnected by two ipes58 and 59 and an elbow 60 to the collector main 61,corresponding to the main 34 of Figs. 1

and 2.

Within each valve casing 50 is an oscillatory valve 62, having a passage.63 arranged-so as to connect a pipe 55 with a pipe 58 when the arm 49is at its left hand limit, and to connect the pipe 51 with the pipe 55when the arm is at its right hand limit.

The cams 47 and 48 are in several circular series, each series beingcomposed of pairs of said cams, one cam, as 47, of eachpair being shapedso as to move its arm 49 to the right, and the other cam, as 48, of eachpair being shaped so as to move the arm to the left. The cam surfacesare disposed in a zig-zag manner so that when one cam surface leaves itsarm the next cam surface will engage the arm and move it back to theposition from whichthe preceding cam surface ditions of each well beingpumped. The cams are removably secured to the drum by screws or otherpreferred means, so that they can be adjusted to other positions on thedrum or other cams having different lengths'or shapes of cam surfacesmay be used. By the use of the cams, variationsin the operation of thevalves are limited only by the size of the drum and the number of camsused, and the operation of each well or pump on the wells can beadjusted to suit the field conditions.

, I claim 1. In a system for pumping a plurality of wells, a pluralityof pumps, a prime mover therefor, a fluid-operated motor for each pump,a pressure pump for the motive fluid, a distributing main connected tothe delivery side of the pressure pump, a distributing valve for eachmotor operated by the prime mover,a branch pipe connecting each valvewith the distributing main, a

pipe connectin each valve to its individual motor, a p1pe avingconnectlon wlth-each;

valve and the inlet side of the pressure pump, means in each valve forconnecting the pipe leading to its motor alternately to the pipe leadingto the motor-supply pipe and to the pipe leading to the inlet side ofthe pressure pump, and means for operating the first means.

2. In a system for pumping a plurality of wells, a pressure pump, aprime mover therefor, a plurality of motors, a pump operated by eachmotor, a motive fluid put under pressure by the. pressure pump foroperating the motors, apressure tank for receiving thefluid from thepressure pump, a separate valve casing for each motor,

mechanical operating connections between each valve and the prime mover,a branch pipe connecting each casing to the pressure tank, a surge p-ipeleading from each casing to one of the motors, a surge tank connected toeach casing, a valve in each casing for connecting the surge pipealternately to the pressure tank and the surge tank, and a pipeconnecting the'surge tank to'the pressure ump. I

3. n a system for pumping a plurality .of wells, a pressure pump, aprime mover therefor, a plurality of motors, a pump operated by eachmotor, a motive fluid put under pressure by the pressure pump, apressure tank to receive the fluid from the pressure pump, adistributing main connected to the pressure tank, a valve casing foreach motor, a branch pipe connecting each casing to the distributingmain, a surge pipe connecting each casing to one motor, a surge tank, abranch pipe connecting each valve casing to the surge tank, :a valve ineach casing to connect the surge pipe alternately to the first andsecond branch pipes, me-

chanical means connected to the prlme 7 mover for operating the valves,and a pipe connecting the surge tank with the pressure pump.

4. In a system for pumping a plurality of wells, a pressure pump, aplurality of motors, a pump operated by each motor, a motive fluid putunder pressure by the pressure pump, a pressure tank to receive thefluid from the pressure pump, a distributing main connected to thepressure tank, a valve casing for each motor, a branch pipe con: nectingeach casing to the distributing main, a surge pipe connectin each casingto one motor, a surge tank, a ing each valve casing to the surge tank, avalve in each casing to connect the surge pipe alternately to the firstand second branch pipes, a shaft, means thereon connected to the saidvalves for operating the same, and a pipe connecting the surge tank withthe pressure pump.

5. In a system for pumping a plurality of wells, a plurality of pumps, afluid-operated motor for each pump, a pressure pump for the motivefluid, a distributing main connected to the delivery side of thepressure pump, a distributing valve for each motor, a branch pipeconnecting each valve with the distributing main, a pipe connecting eachvalve to its individual motor, a pipe having connection with each valveand the inlet side of the pressure pump, means in each valve forconnecting the pipe leading to its motor alternately to the pipe leadingto the motor-supply pipe and to the pipe leading to the inlet sideof thepressure pump, and a series of traveling cams adapted to operate thevalves in a selected sequence.

6. In a system for pumping a plurality of wells, a plurality of pumps, afluid-oper-' ated motor for each pump, a pressure pump for the motivefluid, a distributing main connected to the delivery side of thepressure pump, a distributing valve for each motor, a branch pipeconnecting each valve with the distributing main, a plpe connecting eachvalve .to its individual motor, a pipe having connection with each valveand the inlet side of the pressure pump, means in each valve forconnecting the pipe leading to its motor alternately to the pipe leadingto the motor-supply pipe and to the pipe leading to the inlet side ofthe pressure pump, and a series of traveling and adjustable cams adaptedto operate the valves in a selected sequence at various selected times.

7. In a system for pumping a plurality of wells, a plurality of pumps, afluid-operated motor for each pump, a pressure pump for the motivefluid, a distributing main connected to the delivery side of thepressure pump, a distributing valve for each motor, a branch pipeconnecting each ranch pipe connec-tvalve with the distributing main, apipe connecting each valve to its individual motor, a pipe havingconnection with each periods during which the several valves may remainopen or closed may be independently adjusted.

8. In a system for pumplng a plurallty .of wells, a plurality of pumps,a fluid-operated motor for each pump, a pressure pump for the motivefluid, a distributing main connected to the delivery side of the apressure pump, a distributing valvefor each motor, a branch pipeconnecting each valve with the distributing main, a pipe connecting eachvalve to its individual motor, a pipe having connection with each valveand the inlet side of the pressure pump, means in each valve forconnecting the pipe leading to its motor alternately to the pipe leadingto the motor-supply pipe and to the pipe leading to the inlet side ofthe pressure pump, a rotatable drum, a plu rality of circular series ofcams with their cam surfaces arranged in a zigzag manner around thedrum, and an arm connected to each valve and arranged to be moved by oneof said circular series of cams.

9. In a system for pumping a plurality of wells, a plurality of pumps, afluid-operated motor for each pump, a pressure pump for the motivefluid,a distributing main connected to the delivery side of the pressure pump,a distributing valve for each motor, a branch pipe connecting each valvewith the distributing main, a pipe connecting each valve to itsindividual motor, a pipe having connection with each valve and the inletside of the pressure pump, means in each valve for connecting the pipeleading to its motor alternately to the pipe leading to the motor-supplypipe and to the pipe leading to the inlet side of the pressure pump, arotatable drum, a plurality of circular series of removable cams withtheir cam surfaces arranged in a zigzag manner around the drum, and anarm connected to each valve and arranged to be moved by one of saidcircular series of cams.

10. In a system for pumping a plurality of wells, a pump at each well, afluid-oppumps, a ,pressure pump for the motive fluid, a prime movertherefor, a surge pipe .for connecting each motor with the pressurepump, and a series of valves mechanically operated by the prime moverfor alternately connecting the surge pipes to the outlet and inlet sidesof the pressure pump.

11. In a system for pumping a plurality of wells, a pump at each well, afluid-opnately connecting the surge pipes in a defierated motor at eachWell for the respective nite order to the outlet and inletsides of thepumps, a pressure pump for the motive pressure pump. 10 fluid, a primemover therefor, a surge pipe Signed at Toledo, Ohio, this 1st day of 5for connecting each motor with the pres- November, 1918.

sure pump, and a series of valves mechanit cally operated by the primemover for alter- ANDREW M. STEWART.

